Presence of photoluminescent carbon dots in Nescafe (R) original instant coffee: Applications to bioimaging
文献类型：期刊论文
| 作者 | Jiang, Chengkun1,2; Wu, Hao2; Song, Xiaojie2; Ma, Xiaojun2; Wang, Jihui1; Tan, Mingqian2 |
| 刊名 | talanta
 |
| 出版日期 | 2014-09-01 |
| 卷号 | 127页码:68-74 |
| 关键词 | Carbon dots Nescafe (R) original instant coffee Photoluminescent Bioimaging |
| 英文摘要 | the presence of the carbon dots (c-dots) in food is a hotly debated topic and our knowledge about the presence and the use of carbon dots (c-dots) in food is still in its infancy. we report the finding of the presence of photoluminescent (pl) c-dots in commercial nescafe instant coffee. tem analysis reveals that the extracted c-dots have an average size of 4.4 nm. they were well-dispersed in water and strongly photoluminescent under the excitation of ultra-violet light with a quantum yield (qy) about 5.5%, which were also found to possess clear upconversion pl properties. x-ray photoelectron spectroscopy characterization demonstrates that the c-dots contain c, o and n three elements with the relative contents ca. 30.1, 62.2 and 7.8%. the x-ray diffraction (xrd) analysis indicates that the c-dots are amorphous. fourier-transform infrared (ftir) spectra were employed to characterize the surface groups of the c-dots. the c-dots show a ph independent behavior by varying the ph value from 2 to 11. the cytotoxicity study revealed that the c-dots did not cause any toxicity to cells at a concentration as high as 20 mg/ml. the c-dots have been directly applied in cells and fish imaging, which suggested that the c-dots present in commercial coffee may have more potential biological applications. (c) 2014 published by elsevier b.v. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, analytical |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | nanoparticles ; luminescence ; bright ; probes ; soot |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000338620300009 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/145637]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Dalian Polytech Univ, Sch Biol & Food Engn, Dalian 116034, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Div Biotechnol, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang, Chengkun,Wu, Hao,Song, Xiaojie,et al. Presence of photoluminescent carbon dots in Nescafe (R) original instant coffee: Applications to bioimaging[J]. talanta,2014,127:68-74. |
| APA | Jiang, Chengkun,Wu, Hao,Song, Xiaojie,Ma, Xiaojun,Wang, Jihui,&Tan, Mingqian.(2014).Presence of photoluminescent carbon dots in Nescafe (R) original instant coffee: Applications to bioimaging.talanta,127,68-74. |
| MLA | Jiang, Chengkun,et al."Presence of photoluminescent carbon dots in Nescafe (R) original instant coffee: Applications to bioimaging".talanta 127(2014):68-74. |
入库方式： OAI收割
来源：大连化学物理研究所
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